Boiler-cleaning device



Patent-,ed Got o. BROWN .l

BOILER CLEANING DEVICE. No. 412,458.

UNITED STAT-Es PATENT OFFICE.

CLARK BROWN, OF FREEPOR'I, ILLINOIS.

BOILER-CLEANING' DEVICE.

SPECIFICATION forming part o f Letters Patent No. 412,458, dated October8, 1889. Application filed .I une 18, 1889. Serial No. 314,683. (Nomodel.)

To all whom. it may concern:

Beit known that-I, CLARK BROWN, a resident of Freeport, in the county ofStephenson and State of Illinois, have invented certain new and usefulImprovements in Boiler- Cleaning Devices; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use the same.

My invention relates to improvements in devices for collecting anddischarging impurities-from Water in steam-boilers, 'the object of theinvention being to provide a simple mechanical means for collecting theimpurities which rise to the surface of water in circulation in a boilerand discharging it through a pipe passing through the wall of the boilerfor the purpose of preventing the deposit of such impurities in the formof scale on the boiler walls and iiuesl The invention is fully describedand explained in this specification, and shown in the accompanyingdrawings, in which-- Y Figure 1 is a cross-section of an ordinarytubular boiler with my improved device in Working position therein, thedevice itself bef ing shown partly in front elevation and partly invertical section. Fig. 2 is a vertical section through the line X AX,Fig. l, the plane of section being parallel to 'theiiuesof the'V boiler`and transverse to the device `for collectin g and dischargingimpurities. Fig. 3 isa top plan of the device removed from the boiler.

In these views,A is an ordinary horizontal boiler provided with iiues B,and C isa preferably-rectangular box supported by the flues, and havingits upper margin approximately at the watenlevel of the boiler. pipe cextends from the'lower level of the box outward through the shell of theboiler, and is provided with a stop-cock c', by means of which it may be'openedand closed. The box C is provided with a top D, in which areformed a series of transverse openings D', the top and its openingsbeing a grating, each of whose cross-bars is provided with a dependentflange d, extending downward nearly to the bottom of the box C. Upon thetop D rests a cover E, formed with a series of trans= verse openings E',and adapted to slide back v A discharge# and forth longitudinally in thebox in order to cover orexpose the openings D in the top D. A rod H,extending upward through the shell of the boiler and provided at itsupper end with a handle for turning it, has its lower the upper rearedge of the box, and an arm II', extending forward from the rod H, isprovided at its free end with a downwardlyextending leg h, which entersa suitable socket inthe upper face of the sliding cover El It is evidentthat by the partial rotation of the rod H the sliding cover E may bemoved in either direction and thus made to cover or expose the openingsD of the top D. Steam-pipes K, passing through the top D at the endopposite the dischargepipe C, extend upward into the steam-space abovethe water-line of the boiler and admit steam from said space to theinterior of the box. An apron F extends forward and downward from theupper front margin of the box, and wings G extend across the ends andalong the rear of the upper margin of the box, a space g being left openat the center of the wing along the rear edge. The Water in asteam-boiler when in circulation moves upward at the front of the boilerand downward at the rear end thereof, the current of circulation betweenthe rear and'front being approximately horizontal. All ordinary impurities in the water collect on its surface under the operation of appliedheat and move with the currentin the form of a scum on the surface ofthe water. When the box and the operative parts connected with it are inthe position illustrated and hereinbefore described, the current ofwater and the impurities on the surface of it approach the box in thedirection indicated by the arrow a in Fig. 2. rIhe apron F facilitatesthe movement of the current andthe impurities over the front inarginofthe box, and the wings G serve as a dam, tending to arrest the currentand bring about the deposit of the impurities floating on the surface.position as to expose the openings in the top D, the impurities as theysettle will pass through these openings into the box beneath, and aftersuch a deposit has accumulated, if the cover be moved into such aposition as to close the openings D', and the stop-cock c end stepped ina suitable socket at If the cover E be in such a be opened, the pressureof the steam entering the box through the pipes K will force thecontents of the box out through the dischargepipe c, leaving the boxperfectly free from such impurities. The dependent flanges d force thecurrent of steam in its movement toward the discharge-pipe to pass alongthe bottom of the box, thus enabling it to completely clear the box. ofall its contents. Any impurities not deposited in the box in the firstpassage over it are carried on by the moving current and pass downwardin the direction indicated by the arrow a', Fig. 2, and are soon broughtagain by the circulation of the water into a position to be deposited inthe box and discharged through the pipe c.

I have found in outthe contents of all impurities may practice that byblowing the box once in each day be eifectually removed from the waterused in the boiler and any deposit of scale on the walls of the boilercompletely prevented, and, in fact, the u se of this device in a boilerpreviously coated with scale will not only prevent further accumnlation,but will soon rid it of the former deposit, which falls to pieces if notrenewed from day to day.

Having now described my invention and explained its operation, what Iclaim as new, and desire to secure by Letters Patent, is* 1. In a deviceof the class described, the combination, with a box provided with adischarge-pipe and having a top formed with an opening or openings, of acover adapted to close or expose said opening and means for operatingsaid cover for the purpose of opening or closing the same, substantiallyas and for the purpose set forth.

2. The combination, with a boiler, of a box set therein and having itsupper margin approximatel y at the water-level and having its top partlyopen, a discharge-pipe extending from the box through the boiler-shelland provided with means for opening and closing it, a cover adapted toclose or expose the opening in the top of the box, and means for op- Aerating the cover from a point outside the boiler for the purpose ofclosing or exposing such opening, substantially as and for the purposeset forth.

3. The combination, with the boiler A, of the box C, set therein andprovided with a discharge-pipe c, extending outward through the shell ofthe boiler and having a stop-cock c', the grating-top D D', the cover EE', resting on the top D D' and adapted to close or expose the openingsin the top, and the operating-rod l-l, extending outward through theshell of the boiler and connected with the cover E, whereby the covermay be adjusted with reference to the top of the box for the purpose ofclosing or exposing the openings therein.

4. The combination, with the boiler, of the box C, having thedischarge-pipe c, and the grating-top D D', provided with the dependentflanges (l, the cover E E', resting on the top D D', the operating-rodH, extending outward through the shell of the boiler and adapted tooperai e the cover D D', and means, substantially as shown anddescribed, for admitting steam to the box, substantially as and for thepurpose set forth.

5. The combination, with the box C, provided with the discharge-pipe c,apron F, and wings G., and having the grating-top D D, of the slidingcoverE E', resting on the top, and the operating-rod I-I, extendingthrough the shell of the boiler, substantially as and for the purposeset fortl 6. The combination, with the box C, having the discharge-pipecand grating-top D D', of the cover E, resting on the top, theoperatingrod H, and the pipes K K, connecting the interior of the boxwith the steam-space above the water-level of the box, substantially asand for the purpose set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

, CLARK BROWN. lVitnesses:

R. H. WILES, M. S'rosKoPF.

